Establish the identity.
+ 
= 2 tan 2 x
What will be an ideal response?
+ 
= 
= 
= 2 tan2 x.
Mathematics
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Solve the problem.A telephone call from Texas, U.S.A. to Ontario, Canada costs $1.00 for the first minute and $0.53 for each additional minute. How much will a 27-minute call cost?
A. $13.78 B. $28.56 C. $14.31 D. $14.78
Mathematics
Find the partial fraction decomposition.
A. 
+ 
B. 
- 
C. 
+ 
D. 
- 
Mathematics
Each child got 20 sweets and was offered to distribute them between the toys. The table shows the distribution. Which division is not fair?
Mathematics
Sketch the graph of the function.
Mathematics